321: Difference between revisions
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where the 321A uses [[2N2207]] transistors. | where the 321A uses [[2N2207]] transistors. | ||
[http://elektrotanya.com/tektronix_321.pdf/download.html Tektronix 321 Manual] | |||
[http://bama.edebris.com/manuals/tek/321a/ Tektronix 321A manual] | [http://bama.edebris.com/manuals/tek/321a/ Tektronix 321A manual] | ||
[http://w140.com/tek_fcp/tek_type_321_factory_cal_proc.pdf Tektronix 321 factory calibration procedure] | [http://w140.com/tek_fcp/tek_type_321_factory_cal_proc.pdf Tektronix 321 factory calibration procedure] | ||
Revision as of 10:45, 20 October 2012
The Tektronix 321 is a very compact single-trace, single-timebase portable oscilloscope that is almost completely solid state. It was introduced on April 8th, 1960. The 321 includes several germanium bipolar transistors, which are a known reliability problem. The 321A was introduced in 1964. The 321 and 321A have slightly different circuits. Early instances of the 321 (sn pre-720) use a 5718 peanut tube as the front-end cathode follower. Later 321 and 321A use a 7586 Nuvistor for that role. In several circuits, the 321 uses OC170 transistors where the 321A uses 2N2207 transistors.
Tektronix 321 Manual Tektronix 321A manual Tektronix 321 factory calibration procedure
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front view
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right case
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left internal
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right internal
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rear view
